/Engine/Plugins/Animation/IKRig/Source/IKRigEditor/Public/RigEditor/IKRigController.h
Editors can subscribe to the callbacks on this controller to be notified of changes that require reinitialization of a running IK Rig processor instance. The API here is split into public/scripting sections which are accessible from Blueprint/Python and sections that are only relevant to editors in C++.
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(Config=Engine, HideCategories=UObject) class UIKRigController : public [UObject](API\Runtime\CoreUObject\UObject\UObject)